Question

What is the value of the element at h21?

H= [6, 52, -4]
[15, 9, 75]
[-1, 23, 2]

Answer 1

hrc
r=row
c=collumn

so go the 2nd row
(15,9,75)
and go to the 1st collumn
15


the value is 15

Answer 2

Thus, value of
`h_(21)=15`

Explanation:

`H=\left[\begin{array}{ccc}6&52&-4\\15&9&75\\-1&23&2\end{array}\right]`

Here,
`h_(pq)` represents position of element of matrix h represented by p row and q column.

So,
`h_(21)` represents position of element of matrix h represented by 2 row and 1 column.

Thus, value of
`h_(21)=15`